Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW
Simultaneous meteor radar, MLS, and MERRA observations show that the Antarctic mesopause cooled to 26 K, in response to a 66 K warming in the stratosphere during the 2019 minor sudden stratospheric warming (SSW) in the Southern Hemisphere. Depressed gravity wave (GW) activity and the enhanced upward...
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ftzenodo:oai:zenodo.org:6098860 2023-05-15T13:40:38+02:00 Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW S.Eswaraiah Kyong-Hwan Seo1 Kondapalli Niranjan Kumar Jun Young Hwang Wonseok Lee M.Venkat Ratnam G.Venkata Chalapathi Chalachew Kindie Mengist Yang Ha Kim 2022-02-16 https://zenodo.org/record/6098860 https://doi.org/10.5281/zenodo.6098860 unknown doi:10.5281/zenodo.6098859 https://zenodo.org/record/6098860 https://doi.org/10.5281/zenodo.6098860 oai:zenodo.org:6098860 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode info:eu-repo/semantics/article publication-article 2022 ftzenodo https://doi.org/10.5281/zenodo.609886010.5281/zenodo.6098859 2023-03-11T04:18:41Z Simultaneous meteor radar, MLS, and MERRA observations show that the Antarctic mesopause cooled to 26 K, in response to a 66 K warming in the stratosphere during the 2019 minor sudden stratospheric warming (SSW) in the Southern Hemisphere. Depressed gravity wave (GW) activity and the enhanced upward propagation of 10-day planetary waves (PWs) are prominent during SSWs. We observed an enhancement in carbon monoxide through carbon dioxide (CO2) photolysis and a decrease in ozone (O3) at 75 km during peak SSW. Hence, mesospheric cooling (MC) is due to the combined effects of PWs, CO2 infrared cooling, and O3 depletion but not the adiabatic cooling of GWs. PW analysis suggests that the chemical tracers that induced MC were uplifted from the lower atmosphere by anthropogenic and other sources and propagated through meridional circulation. Thus, the polar mesosphere was significantly affected by the 2019 SH SSW. Simultaneous meteor radar, MLS, and MERRA observations show that the Antarctic mesopause cooled to 26 K, in response to a 66 K warming in the stratosphere during the 2019 minor sudden stratospheric warming (SSW) in the Southern Hemisphere. Depressed gravity wave (GW) activity and the enhanced upward propagation of 10-day planetary waves (PWs) are prominent during SSWs. We observed an enhancement in carbon monoxide through carbon dioxide (CO2) photolysis and a decrease in ozone (O3) at 75 km during peak SSW. Hence, mesospheric cooling (MC) is due to the combined effects of PWs, CO2 infrared cooling, and O3 depletion but not the adiabatic cooling of GWs. PW analysis suggests that the chemical tracers that induced MC were uplifted from the lower atmosphere by anthropogenic and other sources and propagated through meridional circulation. Thus, the polar mesosphere was significantly affected by the 2019 SH SSW. Article in Journal/Newspaper Antarc* Antarctic Zenodo Antarctic The Antarctic Merra ENVELOPE(12.615,12.615,65.816,65.816) |
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ftzenodo |
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description |
Simultaneous meteor radar, MLS, and MERRA observations show that the Antarctic mesopause cooled to 26 K, in response to a 66 K warming in the stratosphere during the 2019 minor sudden stratospheric warming (SSW) in the Southern Hemisphere. Depressed gravity wave (GW) activity and the enhanced upward propagation of 10-day planetary waves (PWs) are prominent during SSWs. We observed an enhancement in carbon monoxide through carbon dioxide (CO2) photolysis and a decrease in ozone (O3) at 75 km during peak SSW. Hence, mesospheric cooling (MC) is due to the combined effects of PWs, CO2 infrared cooling, and O3 depletion but not the adiabatic cooling of GWs. PW analysis suggests that the chemical tracers that induced MC were uplifted from the lower atmosphere by anthropogenic and other sources and propagated through meridional circulation. Thus, the polar mesosphere was significantly affected by the 2019 SH SSW. Simultaneous meteor radar, MLS, and MERRA observations show that the Antarctic mesopause cooled to 26 K, in response to a 66 K warming in the stratosphere during the 2019 minor sudden stratospheric warming (SSW) in the Southern Hemisphere. Depressed gravity wave (GW) activity and the enhanced upward propagation of 10-day planetary waves (PWs) are prominent during SSWs. We observed an enhancement in carbon monoxide through carbon dioxide (CO2) photolysis and a decrease in ozone (O3) at 75 km during peak SSW. Hence, mesospheric cooling (MC) is due to the combined effects of PWs, CO2 infrared cooling, and O3 depletion but not the adiabatic cooling of GWs. PW analysis suggests that the chemical tracers that induced MC were uplifted from the lower atmosphere by anthropogenic and other sources and propagated through meridional circulation. Thus, the polar mesosphere was significantly affected by the 2019 SH SSW. |
format |
Article in Journal/Newspaper |
author |
S.Eswaraiah Kyong-Hwan Seo1 Kondapalli Niranjan Kumar Jun Young Hwang Wonseok Lee M.Venkat Ratnam G.Venkata Chalapathi Chalachew Kindie Mengist Yang Ha Kim |
spellingShingle |
S.Eswaraiah Kyong-Hwan Seo1 Kondapalli Niranjan Kumar Jun Young Hwang Wonseok Lee M.Venkat Ratnam G.Venkata Chalapathi Chalachew Kindie Mengist Yang Ha Kim Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW |
author_facet |
S.Eswaraiah Kyong-Hwan Seo1 Kondapalli Niranjan Kumar Jun Young Hwang Wonseok Lee M.Venkat Ratnam G.Venkata Chalapathi Chalachew Kindie Mengist Yang Ha Kim |
author_sort |
S.Eswaraiah |
title |
Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW |
title_short |
Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW |
title_full |
Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW |
title_fullStr |
Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW |
title_full_unstemmed |
Unusual Antarctic Mesospheric Cooling During 2019 SH Minor SSW |
title_sort |
unusual antarctic mesospheric cooling during 2019 sh minor ssw |
publishDate |
2022 |
url |
https://zenodo.org/record/6098860 https://doi.org/10.5281/zenodo.6098860 |
long_lat |
ENVELOPE(12.615,12.615,65.816,65.816) |
geographic |
Antarctic The Antarctic Merra |
geographic_facet |
Antarctic The Antarctic Merra |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
doi:10.5281/zenodo.6098859 https://zenodo.org/record/6098860 https://doi.org/10.5281/zenodo.6098860 oai:zenodo.org:6098860 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.609886010.5281/zenodo.6098859 |
_version_ |
1766137709463601152 |